Metal distribution is the basis of any building, whether it is a small residential building or a huge skyscraper. Black metal distribution is used more often than the rest due to its improved properties. It is used for the construction of road tunnels, railway rails, trains, aircraft and almost everything that surrounds us in everyday life. The main types of ferrous metal rolling, which are produced in St. Petersburg, are:
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Armature
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I -beam
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steel pipe and corner
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sebaceous sheet
Construction reinforcement made of steel is used to produce concrete structures. Due to the fact that in the production process, reinforcement frames are used, the strength of the finished product increases at times. For the construction of various objects, a reinforcing mesh is produced, which is a fittings of small diameter, which are fastened to each other by welding or several valve rods that have different diameters, which are binded by a special knitting wire.
The reinforcement with a diameter of less than 10 mm produced in St. Petersburg is supplied in the bays, if the diameter of the reinforcement exceeds 10 mm, it is shipped in the form of direct rods associated together. The length of such rods can be from 9 to 12 m. The reinforcement can be divided into classes based on their technical characteristics. There are two classes A1 and A3. Class A 1 bar has a smooth surface, most common and is used for construction. Class A 3 reinforcement is also used in construction, however, due to the corrugated surface, the strength of its hitch with concrete increases several times.
Steel I -Top, or its second name of the double -barrel beam, belongs to the category of shaped metal rolling. I -beam is used in the construction of bridges, large -panel construction. I -beam is divided into several classes. The separation occurs based on the thickness of the shelf and walls, as well as from the production method, as well as the location of the shelf line.
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Depending on the location of the shelf line, the beam can be divided into:
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1. parallel shelves
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2. beam with a slope of shelves
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3. Special steel beam
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4. The beam is hot -rolled steel
In the production process, special attention is paid to the length of the finished product. The maximum possibility of its curvature directly depends on the length of the loser. From factories in St. Petersburg, I-beams are supplied from 4 to 12 meters long.